Answer:
Gravity
Explanation:
Gravity is the force of attraction between two objects, for example between the earth and the moon or between the earth and an apple.
The initial writing of the Sumerians utilized simple pictures or pictograms. For example, a drawing of a person's head meant the word "head". Over time, however, the writing of the Sumerians further developed to include sounds and meanings. This type of writing is called cuneiform writing, which means "wedge-shaped".
Medieval towns from decades ago.
<span>In January 1830, in a dramatic encounter on the floor of the United States Senate, the debate over the nature of the Union took an alarming turn. The debate moved beyond the exchange of alternative views on how to administer the federal government to accusations and recriminations about the destruction of the federal government and the Union. States’ rights and nationalist positions, which previously were adopted without regard to a consistent pattern of sectional identification or alignment, were defined in a way that portended political violence between irreconcilably opposed sections. The event that presented this portent of sectional discord was the debate over the nature of the Union between Daniel Webster of Massachusetts and Robert Y. Hayne of South Carolina.</span>
An independent variable is a variable that is controlled in the experiment to test whether there will be an effect on the dependent variable. So in the experiment, the independent variable is the color of the feeder because Jamal wants to know if there is an effect if he uses red feeders on the hummingbirds. This is the one being controlled by Jamal because he can use a variety of colors of the feeders.